Fluid sprinkling – spraying – and diffusing – Distributor continuously moves relative to support during... – With impact motive means
Patent
1983-03-02
1985-01-08
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Distributor continuously moves relative to support during...
With impact motive means
23953314, 138 45, B05B 302
Patent
active
044923392
ABSTRACT:
A nozzle assembly for a sprinkler comprising a rigid structure cooperatively receiving a flat resilient flow control washer in a position such that when the water under pressure is communicated with the upstream side of the washer the periphery of the downstream face remains generally in a retained relative radial position while the remainder is distorted axially in the downstream direction an amount which increases progressively in a direction toward the interior opening of the washer.
The washer has an annular stream defining surface at the juncture between its interior opening and its upstream side for engaging the water under pressure communicated with the upstream side of the washer and forming the same into a stream issuing through the opening having a cross-sectional area and velocity which vary inversely with respect to one another depending upon the pressure of the water under pressure communicated with the upstream side of the washer so that the water flow rate within the stream is generally constant within an operative range of pressures. The rigid structure includes an upstream projection portion operable to cause the stream defining surface of the washer when distorted as aforesaid to form at least one annular portion which is disposed axially upstream with respect to another annular portion thereof such that one portion of the stream engaged by the one surface portion has a greater radially outward component of movement as compared with another portion of the stream engaged by the other annular surface portion thus resulting in a greater diffusion of the one stream portion with respect to the other stream portion.
REFERENCES:
patent: 3266737 (1966-08-01), Nees
patent: 4091996 (1978-05-01), Nelson
patent: 4228956 (1980-10-01), Varner
patent: 4454929 (1984-11-01), Kempton
Kashnikow Andres
McCarthy Mary F.
Nelson Irrigation Corporation
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